Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5004506 | Welan gum in cement compositions | Floyd L. Allen, Thomas A. Lindroth | 1991-04-02 |
| 4963668 | Welan gum in cement compositions | Floyd L. Allen, Thomas A. Lindroth | 1990-10-16 |
| 4689160 | Acid stable heteropolysaccharide s-421 | Suzanne M. Steenbergen | 1987-08-25 |